Catalytic cracking of C-O bond is one of the important strategies for conversion of lignite into soluble organic matter. Ni/HZSM-5 was prepared by a modified deposition precipitation method with the Ni mass ratio ranging from 5% to 20% and evaluated by catalytic cracking benzyloxy benzene (BOB) and benzyl ether (BE). BOB was completely converted in ethanol over Ni_15%/HZSM-5 under 1 MPa N₂ at 240 °C for 2 h, while BE was completely converted at 180 °C. Ethanol could be activated to CH₃CH₂O· and H· over Ni nanoparticles supported on HZSM-5, which cleaved the C-O bond in BOB and BE. Additionally, the Ni_15%/HZSM-5 was also successfully applied in catalytic ethanolysis of resides from ethanolysis Xilinguole lignite (XL) without H₂ at 300 °C. The soluble portion yields from ethanolysis of XL and catalytic ethanolysis of residue are 47.8% and 15.1%, respectively. Soluble portion 1 (SP₁) and catalytically soluble portion 1 (SP_1C) were identified by gas chromatography/mass spectrometry. Different from SP₁ mainly containing esters and phenols, SP_1C is mainly composed of alkanes, arenes, and esters. In conclusion, catalytic ethanolysis of lignite in H₂-free system is a potential way to cleave C-O bonds and prepare lignite-derived organic chemicals.

CO键的催化裂解是褐煤转化为可溶性有机物的重要策略之一。采用改进的沉积沉淀法制备Ni/HZSM-5，Ni质量比为5%~20%，并通过催化裂解苯甲氧基苯（BOB）和苯甲醚（BE）进行评价。BOB 在 Ni _15% /HZSM-5 上在 1 MPa N ₂下在 240 °C 下完全转化 2 小时，而 BE 在 180 °C 下完全转化。在HZSM-5负载的Ni纳米颗粒上，乙醇可以被活化为CH ₃ CH ₂ O·和H·，从而裂解BOB和BE中的CO键。此外，Ni _15%/HZSM-5也成功应用于300 °C无H ₂乙醇分解锡林郭勒褐煤（XL）残渣的催化乙醇分解。XL乙醇解和残渣催化乙醇解的可溶部分产率分别为47.8％和15.1％。可溶性部分 1 (SP ₁ ) 和催化可溶性部分 1 (SP _1C ) 通过气相色谱/质谱法鉴定。_{与以酯类和酚类为主的SP 1}不同，SP _1C主要由烷烃、芳烃和酯类组成。总之，在无H ₂体系中褐煤的催化乙醇解是裂解CO键和制备褐煤衍生的有机化学品的潜在途径。